Pipe joint



July 30, 1935' A. w. cLAUssEN ET AL 2,009,650

PIPE JOINT Filed Oct. l2, 1954 Patented July 30, 1935 UNITED STATES PIPEJOINT Arthur W. Claussen and Henry G. Floyd, Birmingham, Ala., assignorsto McWane Cast Iron Pipe Co., Birmingham, Ala.

Application October 12, 1934, Serial No. 748,145

4 Claims.

'Ihis invention relates to neW and useful improvements in pipe jointsgenerally, although more particularly to pipe joints of the bell andspigot type.

The principal object of the invention is to provide a flexible joint forbell and spigot pipes which allows for longitudinal expansion andcontraction as Well as lateral deflection between the connected pipes,but which cannot be pulled or blown apart.

Another object of the invention is to construct such a joint with aminimum number of parts, to thereby provide a simple construction andone which is cheap to manufacture,

With these and other objects in View which will more fully appear, thenature of the invention will be more clearly understood by following thedescription, the appended claims, and the several views illustrated inthe accompanying drawing.

In the drawing:-

Figure 1 is a longitudinal sectional view of a pipe joint constructed inaccordance with the invention,

Figure 2 is a transverse section taken on the line 2-2 of Figure 1, and

Figure 3 is a partial side elevation of the movable ring.

Like reference numerals designate corresponding parts throughout theseveral figures of the drawing.

The invention includes a pipe section A having a bell 5 for receivingthe spigot end of a pipe section B. Integral with the bell 5 is a flangeor ring E, and integral with the spigot is an outwardly extendingcircumferential rib 1 which is spaced from the end of the bell. Theouter end of the bell is flared as at 8 to receive a compressible gasket9. A movable ring I surrounds the spigot B and is located between therib 'I and the gasket 9. The inside diameter of the movable ring is lessthan the outside diameter of the rib. A sectional ring C, which in thisinstance, is formed of three sections II, I2 and I3, surrounds thespigot B on the side of the rib 'l opposite the movable ring I0. Themovable ring and the sectional ring are conjointly formed with anannular groove I4 for receiving the rib l. The inside diameter of thegroove is greater than the outside diameter of the rib, the insidediameter of the sectional ring is less than the outside diameter of therib. and the width of the groove is greater than that of the rib. Thethree rings 6, I0 and C are clamped together, with the gasket 9 betweenthe rings 6 and I0, by a plurality of bolts I which pass through alinedopenings formed in the rings, and cooperating nuts I6.

From the foregoing, 1t will be observed that by reason of the relativelywide groove I4 and the relatively narrow rib I the joint will permit oflongitudinal expansion and contraction between the pipe sections; thatany tendency of the pipe sections to separate will be stopped by the rib'I contacting the sectional ring C; that said contact is a line contactthroughout the combined lengths of the ring sections II, I2 and I3 andconsequently the ring affords a substantial abutment; that the jointwill permit of lateral deflection between the pipe sections which isessential when the pipe line follows the contour of a river bottom, thefulcrum being located at the gasket and the clearance between theperiphery of the rib I and the groove I4 allowing for said deflection;that the joint may be readily assembled or disassembled, and that thejoint is not only cheap to manufacture by reason of its simplicity butis also durable in operation.

We claim:-

1. A joint for pipes of the bell and spigot type comprising a fixed ringon the outer end of the bell, a movable ring on the spigot, acompressible gasket between the rings, a circumferential'rib spacedbeyond the gasket and extending outwardly from and integral with thespigot, a sectional ring abutting the outer face of the movable ring andhaving an inside diameter less than the outside diameter of the rib,said movable and sectional rings being spaced from the rib, and clampingbolts connecting all of said rings.

2. A joint for pipes of the bell and spigot type comprising a fixed ringon the outer end of the bell, a movable ring on the spigot, acompressible gasket between the rings, a circumferential rib spacedbeyond the gasket and extending outwardly from and integral with thespigot, a sectional ring abutting the outer face of the movable ring andhaving an inside diameter less than the outside diameter of the rib,said movable and sectional rings being conjointly formed with acircumferential groove for receiving said rib, and clamping boltsconnecting all of said rings.

3, A joint for pipes of the bell and spigot type comprising a xed ringon the outer end of the bell, a movable ring on the spigot, acompressible gasket between the rings, a circumferential rib spacedbeyond the gasket and extending outwardly from and integral with thespigot, a sectional ring abutting the outer face of the mov-A able ringand having an inside diameter less than the outside diameter of the rib,said movable and sectional rings being spaced from the rib andconjointly formed with a. circumferential groove for receiving said rib,and clamping bolts connecting al1 of said rings.

4. A joint for pipes of the bell and spigot type comprising a. ilxedring on the outer end of the bell, a movable ring on the spigot, acompressible gasket between the rings, a circumferential rib spacedbeyond the gasket and extending outward- `ly from and integral with thespigot, a sectional ring abutting the outer face of the movable ring andhaving an inside diameter less than the outside diameter of the rib,said movable and sectional rings being spaced from the rib andconjointly formed with a circumferential groove for receiving said rib,the inside diameter of the groove being greater than the outsidediameter of the rib and the width of the groove being greater than theWidth of the rib, and clamping bolts connecting all of said rings.

ARTHUR W. CLAUSSEN.

HENRY G. FLOYD.

